Learning Center

Air Monitoring Tools

Here at Sigma Aldrich, our aim is to support our customers, by helping you to select the best option for a particular application. As a result, we have several web based tools to help the busy analyst choose an appropriate adsorbent, as well as webinars and videos showing the correct use of products.

Visit sigma-aldrich.com/videos for support on Air Monitoring using the ASSET™ Air Sampler for Isocyanate sampling, and information on key parameters and practical tips for selecting an adsorbent for your thermal desorption gas chromatography applications. If you prefer a downloadable or printable version visit our air monitoring adsorbent selection guide.



Our Application Search Portal has guidance on what is required for a specific application. The link contains a representative sample of our application notes involving air monitoring. For details or additional chromatograms and information, please email our Technical Service.







Using the Analytical Standards Search, you can quickly find the analytical standard or certified reference material you need from the selection of a few thousand products in our web catalog.
● To look up multiple component mixtures, enter component names separated by commas
● When searching by CAS No., hyphenation is optional
● When searching by Agency, a Method value is also required

The Sigma-Aldrich Web Toolbox features helpful online science research tools and resources.
Check out our Unit Converter




Radiello™ selection tools

Every radiello sampling will require the following parts:
RAD121 Radiello™ Triangular Support Plate pk. of 20
RAD195 Radiello™ Clips suspending Radiello triangular support plate, pk. of 20
RAD190 Radiello™ Barcode Labels pk. of 198
RAD1992 Radiello™ Empty Storage Tubes polypropylene (with stopper), volume 12 mL, pk. of 100

Or choose one of our starter kits for VOC, BTEX or butadiene analysis.

Further help in choosing the correct matrix and packing by application can be gained from the table below. Full radiello application details can be found at sigma-aldrich.com/radiello-applications



Radiello selection guide

Part number Application Desorption technique Matrix and Packing Diffusive body needed
(acts as filter to allow *only* analytes of interest through)
RAD147 Phenolic Compounds Thermal desorption matrix SS net (100 mesh, 4.8 mm diam.), Tenax-TA, RAD120 white, configured for general use, pk. of 20
RAD172 Ozone (O3) Acidified 3-methyl-2-benzothiazolinone hydrazone hydrocloride (MBTH) Microporous PE tube with 4,4′-dipyridylethylene coated silica RAD1201 blue, configured for sampling light sensitive compounds, pk. of 20
RAD170 Hydrogen Sulfide (H2S) Solvent (water) and buffers Microporous PE coated with zinc acetate RAD120 white, configured for general use, pk. of 20
RAD166 HF, NO2, and SO2 Water (for NO2, and SO2), IC eluent (for HF) Microporous PE impregnated with wet TEA RAD1201 blue, configured for sampling light sensitive compounds, pk. of 20
RAD169 HCl Desorption with deionized water Stainless steel net with silica gel (100-400 μm particle size) RAD120 white, configured for general use, pk. of 20
RAD145 BTEX and VOCs Thermal desorption Stainless steel net (3 x 8 μm, 4.8 mm diam.), Carbograph RAD1202 yellow, configured for reduced sampling rates, pk. of 20
RAD130 BTEX and VOCs CS2 Desorption Stainless steel net (100 mesh, 5.8 mm diam.), activated with activated charcoal (30-50 mesh) RAD120 white, configured for general use, pk. of 20
RAD168 Ammonia (NH3) Desorption with deionized water Microporous PE impregnated with phosphoric acid RAD1201 blue, configured for sampling light sensitive compounds, pk. of 20
RAD165 Aldehydes Solvent desorption with ACN Stainless steel net with 2,4-DNPH coated FLORISIL® RAD1201 blue, configured for sampling light sensitive compounds, pk. of 20
RAD125 Anaesthetic Gases and Vapors (N2O, forane, ethrane, halothane and sevorane) Solvent desorption with water/methanol mixture Stainless steel net loaded with a mixture of molecular sieve and activated charcoal 35-50 mesh Each sterile bag (pk. 10) contains:
• 1 permeable body
• 1 support plate
• 1 vertical adapter
• 1 adsorbing cartridge

 

Cross reference tools
Our cross-reference tool details Supelco alternatives that may be used as replacements for products from SKC, Inc.
Use the information to find equivalents or substitutes for commonly used adsorbents, including some that are discontinued.
Tables are available for:

  • Anasorb® CMS Sorbent and TD Tubes
  • Carbon Cross-Reference Guide
  • XAD® Adsorbent Tubes

Visit sigma-aldrich.com/skc